VPN and tunnelling ports
Overview
VPN endpoints are internet-facing by design, so keep the software patched, use modern protocols, and remove legacy options such as PPTP.
Ports in this category10
Range coveredAll registry ranges
All VPN and tunnelling port numbers
Every port below is assigned to this category in the registry or by a widely used convention. Open a port for its check and block commands, risk rating and troubleshooting notes.
| Port | Service | Transport | Risk | Description |
|---|---|---|---|---|
| 517 | TALK | TCP / UDP | Standard/Low | like tenex link, but across machine - unfortunately, doesn't use link protocol (this is actually just a rendezvous port from which a tcp connection is established) |
| 1194 | OPENVPN | TCP / UDP | Standard/Low | OpenVPN |
| 1723 | PPTP | TCP / UDP | High | pptp |
| 3148 | NM-GAME-ADMIN | TCP / UDP | Standard/Low | NetMike Game Administrator |
| 3150 | NM-ASSES-ADMIN | TCP / UDP | Standard/Low | NetMike Assessor Administrator |
| 4112 | APPLE-VPNS-RP | TCP / UDP | Standard/Low | Apple VPN Server Reporting Protocol |
| 4500 | IPSEC-NAT-T | TCP / UDP | Standard/Low | IPsec NAT-Traversal |
| 12009 | GHVPN | UDP | Standard/Low | Green Hills VPN |
| 30004 | AMICON-FPSU-S | UDP | Standard/Low | Amicon FPSU-IP VPN |
| 51820 | WIREGUARD | UDP | Standard/Low | Conventional WireGuard listener port used by wg-quick and most WireGuard setup guides |
Other categories
Authentication and access 19Caching and in-memory stores 10Containers and orchestration 10DNS and naming 10Databases 54Development servers 13Directory services 14Email 26File transfer and sharing 27Gaming 6Infrastructure and administration 30IoT and device telemetry 7Message queues and streaming 17Monitoring and metrics 29Networking and proxies 31Printing 19RPC and service APIs 14Remote access 29Time synchronization 10Voice and real-time media 29Web and HTTP 62Windows networking 14
Primary data: IANA Service Name and Transport Protocol Port Number Registry, plus clearly marked community conventions.
Last reviewed 2026-10-30 · Methodology · About · Privacy